• Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • The minimum radius is one half of the value shown.
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Unit of Measure
Items
Round Head Short Square Neck Bolts

Round Head Short Square Neck Bolt, with 0.260" Body Dia.
Round Head Short Square Neck Bolts

Round Head Short Square Neck Bolt, with 0.324" Body Dia.
Round Head Short Square Neck Bolts

Round Head Short Square Neck Bolt, with 0.388" Body Dia.
Round Head Short Square Neck Bolts

Round Head Short Square Neck Bolt, with 0.452" Body Dia.
Round Head Short Square Neck Bolts

Round Head Short Square Neck Bolt, with 0.515" Body Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Round Head Bolts
Codes and Standards N/A ASME B18.5 1990 (R1998)
Unit of Measure N/A English
Nominal Size or Basic Bolt Dia. N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 7/16 in N/A 1/2 in
Nominal Size or Basic Bolt Dia. (Decimal) N/A 0.2500 in N/A 0.3125 in N/A 0.3750 in N/A 0.4375 in N/A 0.5000 in
Max. Body Dia. (E) N/A 0.260 in N/A 0.324 in N/A 0.388 in N/A 0.452 in N/A 0.515 in
Min. Body Dia. (E) N/A 0.213 in N/A 0.272 in N/A 0.329 in N/A 0.385 in N/A 0.444 in
Max. Head Dia. (A) N/A 0.594 in N/A 0.719 in N/A 0.844 in N/A 0.969 in N/A 1.094 in
Min. Head Dia. (A) N/A 0.563 in N/A 0.688 in N/A 0.782 in N/A 0.907 in N/A 1.032 in
Max. Head Height (H) N/A 0.145 in N/A 0.176 in N/A 0.208 in N/A 0.239 in N/A 0.270 in
Min. Head Height (H) N/A 0.125 in N/A 0.156 in N/A 0.188 in N/A 0.219 in N/A 0.250 in
Max. Square Width (O) N/A 0.260 in N/A 0.324 in N/A 0.388 in N/A 0.452 in N/A 0.515 in
Min. Square Width (O) N/A 0.245 in N/A 0.307 in N/A 0.368 in N/A 0.431 in N/A 0.492 in
Max. Square Depth (P) N/A 0.124 in N/A 0.124 in N/A 0.156 in N/A 0.156 in N/A 0.156 in
Min. Square Depth (P) N/A 0.093 in N/A 0.093 in N/A 0.125 in N/A 0.125 in N/A 0.125 in
Max. Corner Radius on Square (Q) N/A 0.031 in N/A 0.031 in N/A 0.047 in N/A 0.047 in N/A 0.047 in
Max. Fillet Radius (R) N/A 0.031 in
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